Columbia MCB50 - Page 10

10
ZONE 3
ZONE 2
ZONE 1 (PRIORITY ZONE)
BOILER
WATER INLET
ZONE 4
*USE FULL PORT ZONE
VALVE.
DHW
CIRCULATOR
CH
CIRCULATOR
CIRCULATOR
FLOW CONTROL
VALVE
SHUT-OFF
VALVE
PRESSURE
REDUCER VALVE
CHECK VALVE
BALL VALVE
AIR SEPARATOR
ZONE VALVE
HOSE BIB
EXPANSION
TANK
ZONE 3
ZONE 2
ZONE 1 (PRIORITY ZONE)
BOILER
WATER INLET
CH & DHW
SYSTEM
CIRCULATOR
*USE FULL PORT ZONE
VALVE. FOR OPTIMUM TANK
PERFORMANCE, CONSIDER
USING ZONE CIRCULATOR
(SEE FIGURE 5)
ZONE 4
CIRCULATOR
SHUT-OFF
VA LV E
PRESSURE
REDUCER VALVE
CHECK VALVE
EXPANSION
TANK
AIR SEPARATOR
ZONE VALVE
HOSE BIB
FLOW CONTROL
VA LV E
Figure #9
Figure #10
CONNECTING SUPPLY AND RETURN PIPING
MULTIZONE SYSTEM WITH
ZONE VALVES AND DHW PRIORITY
(WITH CIRCULATOR)
MULTIZONE SYSTEM WITH
ZONE VALVES AND DHW PRIORITY
(WITH ZONE VALVE)